JP2001523490A - Device for administering liquid medicine to patients - Google Patents

Abstract

(57) [Summary] A device for administering a liquid medicine is composed of an administration part (10) and a plaster (11). The dosing portion (10) is coupled to the cannula stud (30) and the dosing tube (14) and carries a liquid drug. In order to fix the administration part (10) to the patient's skin surface or the surface of an object, a plaster (11) is stuck on said surface. The plaster (11) is provided with a bayonet pin (38) suitable for insertion into the insertion hole (43) of the filter (10). By placing the filter (10) on the bayonet pin (38), the dosing part (10) is detachably connected to the plaster (11). If the dosing part (10) is a filter with a transparent case, when the filter is fixed on the patient's body, the latter is not covered by an adhesive strip, so that the membrane filter becomes very visible.

Description

DETAILED DESCRIPTION OF THE INVENTION

TECHNICAL FIELD [0001] The present invention relates to a device for administering a liquid drug to a patient, the device comprising a dispensing part and a fixed part. The dosing part through which the liquid medicament flows is, for example, a cannula stud, a catheter stud or a filter. The dosing portion is securely fixed, for example, to the patient's skin, clothing, bed, drip stand, or other object by the securing portion.

BACKGROUND ART [0002] Usually, an administration part is fixed to a patient's body by a plaster applied on the administration part. In particular, in the case of a filter, the filter can no longer be checked if the plaster is applied without care. It is necessary to remove the bandage from the patient's skin to see if the filter is clogged. It is important to check the filters frequently, especially when different drugs are administered to the patient by the same route. Because different drugs can interact and crystallize. This, as a result, makes it possible to plug the filter. If the filter is stuck on the filter with a plaster, it will be out of the control of the doctor and the filter cannot be checked continuously. Furthermore, in the case of infusion, the filter must be replaced at regular intervals, since the filter is used to filter out bacteria and particles over a long period of time.

[0003] Some short catheters fixed near the puncture scar on the skin surface include wing-shaped plastic studs. To fix the short catheter, apply plaster on top of the wing-shaped studs. In this way, fixing a filter or catheter to the patient's skin limits the patient's ability to move around freely,
There is a risk of injury.

From US Pat. No. 5,456,671 it is known to secure a catheter to a patient's skin with a plaster. For this purpose, the plaster comprises a first connecting part with an elongated longitudinal hole into which the catheter is inserted. Although it is possible to separate the catheter from the joint without removing the plaster from the patient's skin, the catheter is retained at the joint and continues to significantly limit the patient's free movement.

DISCLOSURE OF THE INVENTION Technical Problems to be Solved by the Invention It is an object of the present invention to be able to easily fix to a patient's body and other transportation devices,
It is an object of the present invention to provide a device for administering a liquid medicine to a patient that can be easily and quickly released and that minimizes the restriction on the patient's freedom of movement.

(Solution method) This object is solved by the invention having the features of claim 1.

[0007] The dispensing part is fixed by a fixing part serving as a plaster, and the fixing part includes a first connecting part detachably connected to a second connecting part provided on the dispensing part. . According to the invention, one of the two coupling parts is made as a bayonet pin and the other coupling part is made as a round insertion hole. Due to the shape of this connecting part according to the invention, the dosing part is able to rotate with respect to the plaster. This gives the patient more freedom to move around and reduces the risk of injury while moving around. The ability to rotate the dosing portion can prevent, for example, a needle inserted into a vein from entering the vein as the patient moves.

The plaster is stuck to the skin surface or the surface of an object. The dosing part can be removed and fixed in a simple manner by the connecting part. In this way, it is not necessary for the plaster to be applied over or obscured by the dosing portion when the dosing portion is secured. If the dosing part is a filter, said filter can be easily examined. The filter is detachably connected to the fixed part via the connection part, so when examining the bottom of the filter or changing the filter, remove the fixed part from the patient's skin or the surface of the object And the filter can be quickly and easily removed.

[0009] These connecting portions can be made detachable by fastening one of the two dosing portions to the other, or the connecting portion can be keyed. With a hanging pin or the like, releasing the coupling part is possible only by keeping the coupling part unkeyed.

[0010] The two connecting parts are preferably made as removable, snap components. At least one of the two snap components is at least partially resilient, such that the snaps together form a pair of mating portions. To release the snap connection, the snap portion can be made such that the elastic portion of one snap component must be manually pushed back before the dispensing portion is removed from the plaster. The snap portion is preferably made such that the dosing portion can be released by removing the snap component of the plaster. To this end, the elastic part of one of the snap components is arcuate and is automatically pushed back when the dosing part is removed. The snap configuration
When made in this manner, there is no need to manually push back the elastic portion of one of the snap components.

[0011] The plug-in pin comprises at least partly a spherical part, so that the patient can move around with great freedom. Such a bayonet pin shape not only allows the dosing section to be able to rotate about the longitudinal axis of the bayonet pin, but also allows the dosing section to be tilted with respect to the longitudinal axis. Thus, the connection of the plug-in pins with the insertion holes is a ball and socket type connection.

[0012] In order to make the plaster made of a very thin flexible material and to stick to non-horizontal planes, it is preferable to provide a bayonet pin on the plaster and an insertion hole in the dosing part. The insertion holes can be made as pocket holes or through holes.

(Embodiment of the Invention) Hereinafter, the present invention will be described in detail with reference to preferred embodiments and drawings.

The device for administering a liquid drug to a patient, shown in FIGS. 1 to 3, comprises a dispensing unit in the form of a filter 10 for filtering particles and bacteria, and a filter 10 which is detachable as described below. And a bandage plaster 11, which is connected in a possible state. The filter 10 includes a cylindrical injection stud 12 with external threads 13. Syringe 14 or dosing tube connected to the storage tank is securely connected to infusion stud 12 via cylindrical stud 15. In this way, both devices for infusion and infusion can be combined with the filter 10, or other dosing part. To this end, the stud 15 includes a cylindrical coupling part 16 arranged concentrically with the stud 15. The outer diameter of the coupling portion 16 corresponds to the inner diameter of the injection stud 12 of the filter 10. The stud 15 includes a female thread 17 that mates with the external thread 13 of the infusion stud 12 to ensure that the syringe barrel 14 is connected to the filter 10.

The injection stud 12 of the filter 10 is coupled to the upper filter portion 21 such that liquid drug flows into the upper filter portion 21 via the syringe barrel 14 (FIG. 2). The lower filter part 22 is connected to the upper filter part by a membrane filter 23, which is arranged on the separating surface of the two filter parts. The liquid medicine flows from the upper filter part 21 to the lower filter part 22 through the membrane filter. Lower filter part 2
2 includes a cylindrical discharge stud 24 which has a concentric coupling part 25 and a female screw 26 corresponding to the stud 15 of the syringe barrel 14. The discharge stud 24 of the filter 10 is adapted to couple with the canoe stud 30. For this reason, the canoe restad 30 includes a cylindrical tip 31 whose outer diameter corresponds to the inner diameter of the discharge stud 24 of the filter 10. The cylindrical tip 31 of the canoe restad 30 is provided with a projection 32 or an external thread which meshes with the internal thread 26 of the discharge stud 24 of the filter 10 so that the filter 10 is securely and firmly connected to the canoe restad 30. Is done. Canoe restad 3
0 is connected to a cannula 33 which leads to the patient's body.

The dressing plaster 11 is provided with an adhesive film on the bottom and can be adhered to the skin 37 of a patient or the surface of an object such as a bed or an incubator of a patient. The bandage 11, made of a flexible material, has a centrally located plug-in pin 38.
including. The plug-in pin projects vertically from the surface when the plaster 11 is applied to the surface. The insertable pin 38 has a thick head and includes a resilient portion 39 on the head. This elastic part 39 can be compressed from the position shown in FIG. 1 so that the head of the insertable pin 38 becomes thinner. As soon as the resilient part 39 of the bayonet pin is no longer stressed, the resilient part 39 automatically returns to the original position shown in FIG.

The filter 10 has an insertion hole 43 for fixing the filter 10 to the plaster 11. The insertion hole 43 plays a role of a pocket hole extending inside (
(Fig. 2). Thus, the filter 10 can be snap-fastened by being placed on the bayonet pin 38. Since the curved shape of the elastic portion 39 matches the shape of the insertion hole 43, the insertable pin 38 can be easily removed from the filter 10. No additional processing is required to separate the snap connection. Since the insertion hole 43 is circular, the filter 10 can be twisted around the plaster 11.

Due to the round shape of the insertion hole 43 and the thick, spherical head of the plug-in pin 38, the plug-in type is such that the bottom of the filter 10 no longer extends parallel to the surface 37. It is possible to rotate and tilt the filter 10 about the longitudinal axis of the pin 38. This increases the freedom of movement of the patient.

As shown in FIG. 2, the depth of the insertion hole 43 formed as a pocket hole is
Selected in comparison to the length of the bayonet pin 38, the filter 10 is adjusted to a certain distance with respect to the surface 37. This means that if surface 3
If 7 is the patient's skin, the filter 10 will prevent the patient's skin from being pushed and hurt. Furthermore, the length of the plug-in pin 38 depends on the filter 10 used.
And depending on the radius of the dosing tube 14, the dosing tube 14 is selected to be supported by the surface 37. Due to the shape of the insertable pin 38, the filter 10 can be tilted, so that the dimensional difference between the radius of the administration tube 14 and the length of the insertable pin 38 can be corrected. Therefore, the ball-and-socket shape, which is the connection between the filter 10 and the dosing tube 14, may not match the filter 10 and dosing tube 1
If 4 is used, it serves the purpose of the correction. If a syringe with a long radius is coupled to the injection stud 12 of the filter 10 for a short period of time, the plug-in pin 38 of the plaster 11 is removed from the filter 10 and the liquid medicine is dispensed from the syringe. , Filter 10 is again mounted on plug-in pin 38. No painful removal of the adhesive strip securing the filter 10 is required.

The side surface 44 facing the plaster 11 is provided with a rounded knob 45 so that the filter 10 is fixed directly to the patient's skin 37 without using the plaster 11, so that the air can pass through the filter 10. It can freely circulate between the skin surfaces 37. Hemispherical,
Prominently arranged, rounded bumps 45 reduce skin irritation to a lesser extent than the ribs on the bottom of the filter or similar, and prevent pain from being pushed and scratches from sharp corners .

To facilitate removal of the plaster 11, the plaster 11 includes a flap 46 that is not covered with an adhesive.

As can be seen from FIG. 3, the plaster 11 has a larger radius than the filter 10. When the filter 10 is placed on the plug-in pin 38 of the plaster 11, the plug-in pin 38 and the insertion hole 43 cannot be seen from directly above. Since both the insertable pin 38 and the insertion hole 43 are arranged at the center of the bandage plaster 11 and the filter 10, respectively,
A disk 47 having a radius slightly longer than the radius of the filter 10 is attached, so that the filter 10 can be easily centered on the plaster from directly above. This considerably facilitates the connection between the plug-in pin 38 of the plaster 11 and the filter 10.

FIGS. 4 and 5 show a second embodiment of the administration device. For example, the filter 50 may be used for a long time to inject a liquid drug, and the patient's skin, clothing, or
It can be worn on bedding. In the embodiment shown, the filter 50 is substantially triangular and flat. During the infusion process, it must be ensured that contaminants and air bubbles are not carried along with the liquid drug being infused into the patient's body. To ensure that the filter 50 is not mistakenly coupled, the filter 50 is substantially triangular in shape, with the vertices of the triangle pointing in the direction of flow. The filter can be funnel-shaped or similar in shape so that the direction of flow can be clearly seen.

As shown in FIG. 5, the liquid medicine flows into the filter 52 on the left half of the filter 50 via the administration tube 51. The filter 52 on the left half is composed of the water absorbing thin film 5
4 separates it from the right half filter 53. It is a feature of the water absorbing thin film 54 that it does not occur in the injection process, but that only the liquid drug permeates the water absorbing thin film 54 and no gas permeates until the pressure becomes relatively high. At the upper part of the filter, a hydrophobic thin film 55 is disposed, into which only a gas, not a liquid drug, permeates. The water-absorbing thin film includes two holes 61 for releasing gas from the filter 50. Only the liquid medicine flowing into the cannula that leads to the patient's body through the discharge pipe 60 can permeate the water-absorbing thin film 54 and flow into the right half filter 53.

In order to fix the filter 50 to the patient's skin surface or the surface of an object, the plaster 11 described in the first embodiment can be used. Since the flat shape of the filter makes it difficult to feed the filter portion into the pocket hole, the filter 50 includes a stud 62, which is firmly connected to the top of the filter 50 holding the administration tube 51 at the top. Have been. The flat stud 62 includes a round insertion hole 63 having a radius greater than the radius of the axis of the bayonet pin 38 and less than the radius of the head of the bayonet pin 38. In order to fix the filter 50 to the plaster 11, the filter 50 is set on a plug-in pin 38, and the elastic portion 39 of the plug-in pin 38 is compressed by the insertion hole 63, and the elastic portion is When it enters the insertion hole 63, it returns to its original shape. Thus, the filter 50 is retained on the plaster 11 by a removable snap connection. As in the first embodiment, it is possible to separate the filter 50 by simply removing the plug-in pin 38 from the filter 50.

In order to prevent the filter 50 from being applied to the surface of the skin or the object to which the plaster 11 is fixed, the insertable pin has a bulge at the end facing the plaster 11 and has a radius of , Larger than the insertion hole 63. In addition, the filter 50 includes another stud with an insertion hole, so that the filter 50 can be coupled to the plug-in pin of the plaster in several places.

Further, the stud 62 has a rectangular hole 64. The tape can be passed through a rectangular hole 64 such that the filter 50 is secured to the patient's clothing using the tape and the fastening features provided on the tape. The filter can be secured to a drip stand, clothing, or other object by tape passed through a rectangular hole 64.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a first preferred embodiment.

FIG. 2 is a schematic side view of the first preferred embodiment.

FIG. 3 is a schematic top view of the first preferred embodiment.

FIG. 4 is a schematic top view of the second preferred embodiment.

FIG. 5 is a schematic side view of the second preferred embodiment;

[Explanation of symbols]

 10, 50 administration part (filter) 11 plaster 12 injection stud 13 male screw 14 administration pipe (injection cylinder) 15 cylindrical stud 16, 25 coupling part 17, 26 female thread 21 upper filter part 22 lower filter part 23 thin film filter 24 discharge stud Reference Signs List 30 canoe restad 31 tip of canoe restad 32 protrusion of canoe restad 33 cannula 37 patient's skin 38 insertable pin 39 elastic part 43, 63 insertion hole 44 surface of administration part 45 round knob 46 flap 47 disc 51 administration Tube 52 Left half filter 53 Right half filter 54 Water absorbent thin film 55 Hydrophobic thin film 60 Discharge tube 61 Air escape hole 62 Flat stud 64 Rectangular hole

[Procedure amendment]

[Submission date] May 17, 2000 (2000.5.17)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

──────────────────────────────────────────────────続 き Continuation of front page (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE ), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SZ, UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DK, EE, ES, FI, GB, GE, GH, GM, HR, HU, ID, IL, IS, JP, KE, KG, KP, KR , KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW (72) Inventor Volker Harms Germany 3434 Kassel, Tannen Kuppenstrasse 17a (72) Inventor Manfred Heitmann, Federal Republic of Germany D-42781 Hahn, Zombels 17 (72) Inventor Tabea Hinkel Der Federal Republic of Germany 34212 Mersungen, Kwilerstrasse 28 (72) Inventor Karl- Heinz Koch Germany-34212 Melsungen, Sonnenhang 23 (72) Inventor Hans-Joachim Otto Germany-34212 Mersungen Riknitzer-Strasse No. 6 (72) Inventor Klaus Siemon Federal Republic of Germany Day-34327 Kerle, Mühlenfeldstrasse No. 24 (72) Inventor Martin Zippel Federal Republic of Germany Day-34212 Melsungen, U No. 1 in Plantweg

Claims (7)

[Claims] An administration part (10, 50) through which a liquid medicine flows, and an administration part (10, 50).
50) to fix the plaster (11).
) Comprises a second connecting part (43, 63) provided on the dosing part (10, 50) and a first connecting part (38) removably connected to the dosing part (10, 50). One of the two connecting parts (38, 43, 63) is made as a plug-in pin (38) and the other is made so that it can rotate with respect to the plaster (11). Device for administering liquid medicine to a patient, characterized in that it is made as a round insertion hole (43, 63). 2. The device according to claim 1, wherein the two connecting portions are made as snap components. 3. The insertable pin (38) holds the dosage part (10, 50) at a certain distance from the surface on which the plaster (11) is applied. An apparatus according to claim 1 or claim 2. 4. The method according to claim 1, wherein said insertable pin (38) is provided in the plaster (11) and an insertion hole (43, 63) is provided in the administration part (10, 50). Apparatus according to any of claims 1 to 3. 5. The plaster (11) comprising a non-stick flap.
5. The apparatus according to any one of claims 1 to 4. 6. The dosing part (50) is further taped to the dosing part (5).
Apparatus according to any of the preceding claims, comprising a rectangular hole (64) for fixing 0). 7. The surface (44) of the dosing part (10) facing the plaster (11).
) Comprises a bulb (45).